:root {
  color-scheme: light;
  --ink: #0a0d12;
  --muted: #586476;
  --blue: #087bff;
  --paper: #f8fbfd;
  --line: rgba(14, 36, 60, 0.13);
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; }
html { background: var(--paper); }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
a { color: var(--blue); text-underline-offset: 3px; }
:focus-visible { outline: 3px solid rgba(8, 123, 255, 0.52); outline-offset: 4px; }
.site-header { height: 64px; display: flex; align-items: center; justify-content: space-between; padding: 0 clamp(16px, 7.7vw, 128px); background: rgba(255, 255, 255, 0.88); border-bottom: 1px solid rgba(31, 55, 77, 0.08); }
.brand { color: var(--ink); font-size: 21px; font-weight: 700; letter-spacing: -0.025em; text-decoration: none; }
.site-header nav { display: flex; gap: 28px; }
.site-header nav a { color: #5b6470; font-size: 14px; text-decoration: none; }
.site-header nav a:hover, .site-header nav a[aria-current] { color: var(--ink); }
main { max-width: 720px; margin: 0 auto; padding: clamp(48px, 9vw, 104px) 16px clamp(64px, 10vw, 120px); }
h1 { margin: 0 0 12px; font-size: clamp(38px, 6vw, 56px); line-height: 1.02; letter-spacing: -0.04em; font-weight: 600; }
.lede { margin: 0 0 8px; color: var(--muted); font-size: 19px; line-height: 1.55; }
.updated { margin: 0 0 48px; color: var(--muted); font-size: 14px; }
h2 { margin: 44px 0 12px; font-size: 22px; letter-spacing: -0.02em; font-weight: 600; }
h3 { margin: 28px 0 8px; font-size: 17px; font-weight: 600; }
p, li { font-size: 17px; line-height: 1.65; }
p { margin: 0 0 14px; }
ul { margin: 0 0 14px; padding-left: 22px; }
li { margin-bottom: 6px; }
.contact-card { margin: 8px 0 40px; padding: 28px; background: #fff; border: 1px solid var(--line); border-radius: 20px; }
.contact-card p { margin: 0 0 16px; color: var(--muted); }
.mail-button { display: inline-flex; align-items: center; min-height: 48px; padding: 0 26px; color: #fff; background: var(--blue); border-radius: 999px; font-size: 16px; font-weight: 500; text-decoration: none; }
.mail-button:hover { background: #006ceb; }
footer { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; justify-content: space-between; padding: 28px clamp(16px, 7.7vw, 128px); border-top: 1px solid var(--line); background: #fff; color: var(--muted); font-size: 13px; }
footer nav { display: flex; gap: 20px; }
footer a { color: var(--muted); }